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PAC

Catalog No.GC34151

PAC, consists the ADCs linker and PROTACs, conjugated to an antibody. PAC extracts from patent WO2017201449A1, compound LP2. PAC conjugated to an antibody is a more marked estrogen receptor-alpha (ERα) degrader compared to PROTAC (without Ab).

Products are for research use only. Not for human use. We do not sell to patients.

PAC Chemical Structure

Cas No.: 2158322-33-7

Size Price Stock Qty
5mg
$2,023.00
In stock
10mg
$3,126.00
In stock

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Sample solution is provided at 25 µL, 10mM.

Product Documents

Quality Control & SDS

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Protocol

Kinase experiment:

Syntheses of a PAC:A. Chemical Synthesis of a PROTAC:i. Attachment of a Linker (L2) to an E3 Ligase Binding Group (E3LB).ii. Attachment of a protein binding moiety (PB) to an E3LB via a Linker (L2).B. Preparation of L1-PROTAC:iii. Attachment of Linker L1 to PROTAC.C. Preparation of PAC: iv. Attachment of Antibody (Ab) to PROTAC via Linker L1[1].

References:

[1]. Thomas Pillow, et al. Protac antibody conjugates and methods of use. WO2017201449A1.

Background

PAC comprises an antibody conjugated via a linker to a PROTAC. PAC extracts from patent WO2017201449A1, compound PAC1. PAC is a more marked estrogen receptor-alpha (ERα) degrader compared to PROTAC (without Ab).

Treatment of HER2 expressing cells with HER2 antibody containing PAC Anti-HER2(Endox-XIAP) results in a marked decreased Estrogen Receptor-alpha (ERα) levels with an IC50 of 132 ng/mL. The PROTAC-Antibody Conjugate (PAC) molecules comprise an antibody conjugated via a linker (L1) to a PROTAC, wherein the PROTAC comprises an ubiquitin E3 ligase binding group ("E3LB"), a linker ("L2") and a protein binding group ("PB"). The following sections describe the components that comprise the PAC. To obtain a PAC having potent efficacy and a desirable therapeutic index, the following components are provided. 1. Antibody (Ab): The antibody portion of a PAC can target a cell that expresses an antigen whereby the antigen specific PAC is delivered intracellularly to the target cell, typically through endocytosis While PACs that comprise an antibody directed to an antigen that is not found on the cell surface may result in less specific intracellular delivery of the PROTAC portion into the cell, the PAC may still undergo pinocytosis. 2. Linkers (L1): A"linker" (L1) is a bifunctional or multifunctional moiety that can be used to link one or more PROTAC moieties (D) to an antibody (Ab) to form a PAC. In some embodiments, PACs can be prepared using a L1 having reactive functionalities for covalently attaching to the PROTAC and to the antibody. 3. PROTAC(D) [1].

[1]. Thomas Pillow, et al. Protac antibody conjugates and methods of use. WO2017201449A1.

Chemical Properties

Cas No. 2158322-33-7 SDF
Formula C94H107N13O16 M.Wt 1674.93
Solubility DMSO: 100 mg/mL (59.70 mM); Water: < 0.1 mg/mL (insoluble) Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table

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1 mg 5 mg 10 mg
1 mM 0.597 mL 2.9852 mL 5.9704 mL
5 mM 0.1194 mL 0.597 mL 1.1941 mL
10 mM 0.0597 mL 0.2985 mL 0.597 mL
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.

Reviews

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Average Rating: 5 ★★★★★ (Based on Reviews and 39 reference(s) in Google Scholar.)

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